/Engine/Source/Editor/UnrealEd/Public/IPropertyAccessEditor.h
Get the compatibility of the two supplied properties. Ordering matters for promotion (A->B).
EPropertyAccessCompatibility GetPropertyCompatibility ( const [FProperty](API\Runtime\CoreUObject\UObject\FProperty) * InPropertyA, const [FProperty](API\Runtime\CoreUObject\UObject\FProperty) * InPropertyB ) const